{"id":"CVE-2025-64100","aliases":["GHSA-2hvh-cw5c-8q8q","PYSEC-2026-1246"],"title":"CKAN vulnerable to fixed session IDs","summary":"CKAN vulnerable to fixed session IDs","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N","vendor":"ckan","product":"ckan","ecosystem":"pip","affected":["ckan >= 2.10.0, < 2.10.9","ckan >= 2.11.0, < 2.11.4"],"patched":["ckan 2.10.9","ckan 2.11.4"],"published":"2025-10-29","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-2hvh-cw5c-8q8q","references":[{"url":"https://github.com/ckan/ckan/security/advisories/GHSA-2hvh-cw5c-8q8q"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-64100"},{"url":"https://github.com/ckan/ckan/commit/c2fe437f88be850a6edf7a32470772428819fab5"},{"url":"https://github.com/ckan/ckan"}],"tags":["osv","pip"],"epss":0.00278,"epssPercentile":0.20467,"ingestedAt":"2026-07-08T18:25:44.529Z","slug":"CVE-2025-64100","body":"## Overview\n\n### Impact\n\nSession ids could be fixed by an attacker if the site is configured with server-side session storage (CKAN uses cookie-based session storage by default). The attacker would need to either set a cookie on the victim's browser or steal the victim's currently valid session. Session identifiers are now regenerated after each login.\n\n### Patches\nThis vulnerability has been fixed in CKAN 2.10.9 and 2.11.4\n\n### References\n[https://en.wikipedia.org/wiki/Session_fixation](https://en.wikipedia.org/wiki/Session_fixation)\n\n## Affected packages\n\n- `ckan >= 2.10.0, < 2.10.9`\n- `ckan >= 2.11.0, < 2.11.4`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `ckan 2.10.9`\n- `ckan 2.11.4`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}